Issued Patents 1997
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5670247 | Photoreactive noxious substance purging agent and photoreactive noxious substance purging material using the agent | Kazuchiyo Takaoka, Kenji Hyodo, Isao Ebihara, Yasuyuki Oku | 1997-09-23 |